It's all personal preference before rigging. You can build your rigs separately, then try to figure out how to connect the two, but I find it's best to set up a common base, and continue to refine both at the same time. That way, if you get bored, or frustrated, you can jump to another spot.
However, you should NEVER touch the mesh after it's bound. Combining meshes after they have been rigged will slow your scene to a crawl, as it has to keep all of the previous geometry in the history, as well as evaluate it every time the rig moves.
Imagination is more important than knowledge.
Last edited by NextDesign; 08-01-2013 at 06:29 AM.